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nathanmarlor / foxess_modbus

FoxESS inverter integration. Connect directly to your FoxESS inverter (no cloud!) for real-time status and control.
MIT License
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unable to connect to modbus #643

Open banzoola opened 1 month ago

banzoola commented 1 month ago

Step 1 - wired into modbus using an ethernet cable 1 twisted pair (pin 3 and 4) Step 2 - wired into modbus to ethernet adapter connecting relevant cables to A+ and B+ Step 3 - confirmed modbus is accessible via webui and changed relevant settings acording to wiki Step 4 - Cant intergrate to HA or get a response from modpoll. Step 5 - I feel like im cursed at the moment!

./modpoll -m enc -p 503 -a 247 -t 3 -0 -1 -c 16 -r 11000 192.168.100.7 modpoll 3.11 - FieldTalk(tm) Modbus(R) Master Simulator Copyright (c) 2002-2024 proconX Pty Ltd Visit https://www.modbusdriver.com for Modbus libraries and tools.

Protocol configuration: Encapsulated RTU over TCP, FC4 Slave configuration...: address = 247, start reference = 11000 (PDU), count = 16 Communication.........: 192.168.100.7, port 503, t/o 1.00 s, poll rate 1000 ms Data type.............: 16-bit register, input register table

Can't reach server/slave! Check TCP/IP and firewall settings.

banzoola commented 1 month ago

forgot to also confirm slave is set correctly on the inverter

FozzieUK commented 1 month ago

Just a couple of quick questions / thoughts -

is it an H1 inverter ? (Others have different RS485 pin outs on the meter connector)

Which adapter are you using ?

Is Port 503 correct?, the default setting is normally 502

banzoola commented 1 month ago

i was testing and changed the port, good spot, I didnt want to add another comment clarifying that and the edit button was missing. It is a AC1 inverter however it states that its supported here https://github.com/nathanmarlor/foxess_modbus. FoxESS H1 (including AC1 and AIO-H1).

Update, double checked the AC1 manual - it is pin 3 and 4 the same as HC1. pin 3 - 485B pin 4 - 485A

FozzieUK commented 1 month ago

The AC1 should work just fine if it’s Gen 1, the Gen 2 hybrid works ok if it has latest firmware, so if it’s a Gen 2 AC1 you might need to get your firmware updated to latest.

I can see you are using -enc on the modpoll which suggests your adapter isn’t encoding modbus - which adapter are you using ?

Another thing to check is that your inverter ethernet option is disabled and DHCP is off - it sometimes stops the modbus working if it has been enabled previously.